Compensation of transmitter distortion using a nonlinear modeling approach

Author

Cao, H. ; Tehrani, A. Soltani ; Fager, C. ; Eriksson, T. ; Zirath, H.

Author_Institution

Dept. of Microtechnol. & Nanosci., Chalmers Univ. of Technol., Gothenburg

fYear

2008

fDate

24-25 Nov. 2008

Firstpage

131

Lastpage

134

Abstract

In this paper, a nonlinear modeling approach is used to demonstrate a joint compensation scheme for the linear and nonlinear distortions in the I/Q modulator and the power amplifier. Based on this nonlinear model, a digital pre-compensator is constructed. The effects of these two most dominant nonlinear components in a modern transmitter can therefore be digitally pre-compensated in a single step. The results are verified by experiments, and the proposed approach shows promising performance.

Keywords

nonlinear distortion; transmitters; I/Q modulator; digital pre compensator; joint compensation scheme; nonlinear distortions; nonlinear modeling approach; power amplifier; transmitter distortion; Digital signal processing; Nonlinear distortion; OFDM modulation; Power amplifiers; Power system modeling; Predistortion; Radio frequency; Radiofrequency amplifiers; Transmitters; Wireless communication; I/Q imbalance; I/Q modulator; Volterra series; power amplifier; transmitter;

fLanguage

English

Publisher

ieee

Conference_Titel

Integrated Nonlinear Microwave and Millimetre-Wave Circuits, 2008. INMMIC 2008. Workshop on

Conference_Location

Malaga

Print_ISBN

978-1-4244-2645-4

Electronic_ISBN

978-1-4244-2646-1

Type

conf

DOI

10.1109/INMMIC.2008.4745734

Filename

4745734